CPUID displays the vendor ID, the processor specific features, the processor name string, different kinds of instruction set extensions present, L1/L2 Cache information, and so on for the processor on which it is running. This is a fairly complete CPU identification utility. It has been tested on several Intel, AMD and Cyrix CPUs. If the Pentium III serial number misfeature is present and enabled, this program will display it.

[ Homepage: http://www.ka9q.net/code/cpuid/ ]

The information generated from CPUID is quite long, here is some snippet from my laptop, no parameters needed: